CN107049535B - Micro-screw fastening handle - Google Patents

Micro-screw fastening handle Download PDF

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Publication number
CN107049535B
CN107049535B CN201710356580.1A CN201710356580A CN107049535B CN 107049535 B CN107049535 B CN 107049535B CN 201710356580 A CN201710356580 A CN 201710356580A CN 107049535 B CN107049535 B CN 107049535B
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Prior art keywords
bolt
transmission
keycap
key
gear
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CN107049535A (en
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张哲谌
钱玉芬
余佳梦
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Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
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Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0089—Implanting tools or instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0093—Features of implants not otherwise provided for
    • A61C8/0096—Implants for use in orthodontic treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/12—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types
    • F16H37/124—Gearings comprising primarily toothed or friction gearing, links or levers, and cams, or members of at least two of these types for interconverting rotary motion and reciprocating motion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C2204/00—Features not otherwise provided for

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  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Epidemiology (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Mechanical Engineering (AREA)
  • Prostheses (AREA)
  • Transmission Devices (AREA)

Abstract

The invention relates to the field of medical instruments, and discloses a micro-screw fastening handle, which is used for fastening a micro-screw and comprises: the neck is provided with a key, and the key comprises a keycap and a spring for supporting the keycap; the head part is provided with a groove for placing a micro screw; the inner wall of the groove is provided with a bolt; the transmission assembly is arranged inside the neck and is used for connecting the keycap and the bolt; when the key cap is pressed down, the spring is compressed, and the key cap drives the bolt to move along the radial direction of the head part through the transmission assembly; when the keycap is released, the spring restores to deform, and the keycap drives the bolt to move along the radial direction of the head part in the opposite direction through the transmission assembly. The micro-screw fastening handle can prevent the micro-screw from falling off.

Description

Micro-screw fastening handle
Technical Field
The invention relates to the field of medical instruments, in particular to a micro-screw fastening handle.
Background
A miniscrew is an implant commonly used in the orthodontic field. As a temporary device, a micro screw is implanted at a specific position in the oral cavity of a patient by an operation method, so that specific anchorage can be provided for orthodontic treatment, and orthodontic treatment can be assisted.
In 1997, kanomi proposed a miniscrew specifically for orthodontic treatment. In the next year, costa et al designed threaded nails with bracket-like miniscrews and began to apply clinically. Since then, a great number of different designs and details of miniscrew have begun to emerge and have driven the development of clinical applications.
People often fasten the handle with a miniscrew that is rotated and fixed to the patient's gums. Prior to fixation, the miniscrew first needs to be mounted on the head of the miniscrew tightening handle.
In the chinese utility model patent with application number CN200320124802.0, a typical micro screw structure is disclosed, and a through hole is provided on the head of the micro screw. This through hole can be used not only to pass and secure the archwire, but also as a slot mounted on the miniscrew tightening handle.
Referring to fig. 1, 2 and 3, the conventional micro-screw fastening handle comprises a handle body 7, a neck portion 1 and a head portion 2, wherein the neck portion 1 is connected to the handle body 7, the head portion 2 is connected to the neck portion 1, a groove for placing a micro-screw is formed in the head portion 2, a plug pin 3 is arranged on the inner wall of the groove, and the plug pin 3 is fixed through an elastic member and has a certain stroke. When the through hole is used as a slot, the micro screw is plugged into the groove, and the bolt 3 is inserted into the slot depending on the stroke generated by the elastic piece.
However, in order to guarantee that the micro-screw can be successfully inserted into the groove, the stroke of the plug pin 3 cannot be set long. During the rotation of the micro screw, the bolt 3 is too short in stroke to provide a sufficient fixing effect under the force of the teethridge and the micro screw fastening handle. Therefore, the existing micro-screw fastening handle is easy to slip in the process of fastening the micro-screw, so that the micro-screw falls off.
Since the micro screw is generally a disposable product and expensive in order to ensure a sterile environment, the loss caused by the dropping of the micro screw is very large.
Disclosure of Invention
The invention aims to provide a micro-screw fastening handle which can prevent a micro-screw from falling off.
In order to solve the above technical problem, the present invention provides a miniscrew fastening handle for fastening a miniscrew, comprising:
the neck is provided with a key, and the key comprises a keycap and a spring for supporting the keycap;
the head part is provided with a groove for placing a micro screw; the inner wall of the groove is provided with a bolt;
the transmission assembly is arranged inside the neck and is used for connecting the keycap and the bolt;
when the key cap is pressed down, the spring is compressed, and the key cap drives the bolt to move along the radial direction of the head part through the transmission assembly;
when the keycap is released, the spring restores to deform, and the keycap drives the bolt to move along the radial direction of the head part in the opposite direction through the transmission assembly.
Compared with the prior art, the invention controls the movement of the bolt by utilizing the key, so that the stroke of the bolt is irrelevant to the action of plugging the micro screw into the groove, and the stroke of the bolt can be accurately and quantitatively controlled according to the structural design of the transmission assembly, so that the bolt can be deeply inserted into the slot, the fixing effect of the micro screw is improved, and the micro screw is prevented from falling.
Preferably, the transmission assembly comprises:
two ends of the transmission rod are respectively connected with the key and the plug pin on the same side of the key;
when the key cap is pressed down, the spring is compressed, and the key cap drives the plug pin to move along the radial direction of the head part through the transmission rod, so that the plug pin and the slot arranged on the micro screw are mutually inserted;
when the keycap is released, the spring is restored to deform, and the keycap drives the bolt to move along the radial direction of the head part through the transmission assembly, so that the bolt is separated from the slot arranged on the micro screw.
The transmission rod is utilized to drive the bolt to move, and the device has the advantages of simple structure and strong reliability.
Alternatively, preferably, the transmission assembly comprises:
the two ends of the transmission rod are respectively connected with the key and the bolt on the opposite side of the key;
when the key cap is pressed down, the spring is compressed, and the key cap drives the plug pin to move along the radial direction of the head part through the transmission rod, so that the plug pin is separated from the slot arranged on the micro screw;
when the keycap is released, the spring is restored to deform, and the keycap drives the bolt to move along the radial direction of the head part through the transmission assembly, so that the bolt is mutually inserted into the slot arranged on the micro screw.
When the transmission rod is connected with the bolt on the opposite side, the key cap is pressed down to separate the bolt from the slot arranged on the micro screw, so that the default situation that the bolt is in the state of being mutually inserted into the slot arranged on the micro screw is realized, and a doctor does not need to continuously press the key in the process of fastening the handle by using the micro screw, thereby saving labor.
Preferably, the number of the keys, the number of the transmission rods and the number of the bolts are two, and the keys and the bolts are connected through the transmission components in a one-to-one correspondence manner;
wherein, two buttons are located the relative both sides on the neck respectively, and two bolts also are located these both sides respectively. When both sides all are provided with the bolt and all by button control, can all possess sufficient stroke for the bolt of both sides, improve fixed effect.
In addition, preferably, the number of the inserted pins is two, the two inserted pins are respectively positioned on two opposite sides of the neck part and respectively comprise a left inserted pin and a right inserted pin, and teeth are arranged on the inserted pins;
the transmission assembly includes:
a drive member;
the central gear is in transmission connection with the keycap through the driving piece;
the left transmission gear is in transmission connection with the central gear in the same direction;
the right transmission gear is in reverse transmission connection with the central gear;
the left side bolt is meshed with the left transmission gear, and the right side bolt is meshed with the right transmission gear;
when the keycap is pressed down, the spring is compressed, and the driving piece enables the central gear to rotate; the central gear drives the left transmission gear and the right transmission gear to rotate, and the bolt moves along the radial direction of the head part;
when the keycap is released, the spring restores to deform, and the driving piece enables the central gear to rotate reversely; the central gear drives the left transmission gear and the right transmission gear to rotate, and the bolt moves in the opposite direction along the radial direction of the head.
When the transmission rod is used as a transmission component, the long and narrow transmission rod may be deformed by a certain force due to the selection of materials. Compared with the transmission rod, the gear structure has better stability and reliability.
Further, preferably, the driving member is a rack, and one end of the rack is connected with a keycap of the key;
the central gear is meshed with the teeth of the rack;
when the key cap is pressed down, the spring is compressed, and the key cap drives the rack to move along the length direction of the rack and drives the central gear to rotate;
when the keycap is released, the spring restores to deform, and the keycap drives the rack to move along the length direction of the rack and drives the central gear to rotate reversely.
The stroke of the keycap of the key can be directly converted into the formation of the bolt by utilizing the rack to be meshed with the central gear. Moreover, the stroke of the bolt can be quantitatively controlled by adjusting the gear ratio.
In addition, by utilizing the gear structure, one key can be used for controlling the pins on two sides to move close to or away from each other, and the mechanism is more convenient compared with a transmission rod.
Further, preferably, the key is arranged at the same side of the left bolt;
when the keycap is pressed down, the left side bolt and the right side bolt move away from each other;
when the keycap is released, the left side bolt and the right side bolt move close to each other.
When the key is pressed down, the bolts at the two sides are far away from each other, and when the key is released, the bolts at the two sides are close to each other. This will make the doctor need not to keep holding down the button and not putting when rotating the little screw fastening handle, therefore the convenience of operation improves.
Further, preferably, the left transmission gear and the right transmission gear are in transmission connection with the central gear through belts, chains or gear sets respectively.
Further preferably, the transmission assembly further comprises a left connecting belt wheel and a right connecting belt wheel;
the left transmission gear is connected with a left connecting belt wheel through a belt, and the left connecting belt wheel is connected with the central gear through a belt;
the right transmission gear is reversely connected with a right connecting belt wheel through a belt, and the right connecting belt wheel is connected with the central gear through the belt.
When being provided with left side and connecting the band pulley and connect the band pulley with the right side, can provide more stable stroke through the belt, can make to provide the reverse motion that left and right sides bolt was in moreover more conveniently.
In addition, preferably, the driving part is a motor, and the motor is used for driving the central gear to rotate;
the button is a switch of the motor. The movement of the bolt is controlled by the motor, so that the labor is saved and the reliability is good.
Drawings
FIG. 1 is an enlarged schematic view of a micro-screw fastening handle of the background of the invention at the head and neck portions;
FIG. 2 is an overall schematic view of a micro-screw fastening handle of the background of the invention;
FIG. 3 is a schematic top view of a prior art miniscrew fastening handle of the present invention in the direction from the head;
FIG. 4 is an enlarged schematic view of a first embodiment of the miniscrew fastening handle of the present invention in the head and neck portion;
FIG. 5 is an enlarged schematic view of a second embodiment of a miniscrew fastening handle of the present invention in the head and neck portion;
FIG. 6 is an enlarged view of the head and neck portions of a miniscrew tightening handle when the drive rod of the third embodiment of the present invention has both ends connected to the key and the plug pin at the same side as the key, respectively;
FIG. 7 is an enlarged view of the head and neck portions of a miniscrew tightening handle with a push button and a latch on the opposite side of the push button attached to each end of a third embodiment of the drive link of the present invention;
FIG. 8 is an enlarged schematic view of a fourth embodiment of a miniscrew fastening handle of the present invention in the head and neck portion;
FIG. 9 is an enlarged schematic view of the head and neck portions of a miniscrew tightening handle in one position of the left and right attachment pulleys of the fifth embodiment of the present invention;
FIG. 10 is an enlarged schematic view of the head and neck portions of the miniscrew tightening handle in another position of the left and right attachment pulleys of the fifth embodiment of the present invention;
fig. 11 is an enlarged schematic view of a sixth embodiment of the miniscrew tightening handle of the present invention in the head and neck portion.
Description of reference numerals:
1-neck part; 2-a head; 3, inserting a pin; 4-pressing a key; 41-a spring; 42-a keycap; 5-a transmission rod; 61-sun gear; 62-left drive gear; 63-right drive gear; 64-a rack; 65-left connecting pulley; 66-right connecting belt wheel; 67-a motor; 7-handle body.
Detailed Description
Implementation mode one
A first embodiment of the present invention provides a miniscrew fastening handle for fastening a miniscrew, as shown in fig. 4, comprising:
the neck part 1, the neck part 1 is provided with a key 4, and the key 4 comprises a keycap 42 and a spring 41 for supporting the keycap 42;
the head part 2 is provided with a groove for placing a micro screw; the inner wall of the groove is provided with a bolt 3;
the transmission assembly is arranged inside the neck part 1 and is used for connecting the keycap 42 with the plug pin 3;
when the key cap 42 is pressed down, the spring 41 is compressed, and the key cap 42 drives the bolt 3 to move along the radial direction of the head part 2 through the transmission component;
when the key cap 42 is released, the spring 41 is deformed again, and the key cap 42 drives the pin 3 to move in the opposite direction along the radial direction of the head 2 through the transmission assembly.
The shape of the groove can be matched with that of the head of the micro screw, so that the micro screw fastening handle has a better fastening effect.
Specifically, in the present embodiment, the transmission assembly includes:
two ends of the transmission rod 5 are respectively connected with the key 4 and the plug pin 3 at the same side with the key 4;
when the key cap 42 is pressed down, the spring 41 is compressed, the key cap 42 drives the bolt 3 to move along the radial direction of the head part 2 through the transmission rod 5, so that the bolt 3 is mutually inserted into the slot arranged on the micro screw;
when the key cap 42 is released, the spring 41 is deformed again, and the key cap 42 drives the pin 3 to move along the radial direction of the head 2 through the transmission component, so that the pin 3 is separated from the slot arranged on the micro screw.
The transmission rod 5 is used for driving the bolt 3 to move, and the device has the advantages of simple structure and high reliability.
When the micro-screw fastening handle is used, the head 2 of the micro-screw is arranged in the groove, the key 4 is pressed and not placed, and the bolt 3 is inserted into the slot on the head of the micro-screw, so that the micro-screw fastening handle tightly locks the micro-screw. The micro-screw fastening handle is rotated, after the micro-screw is fixed at a given position on the gum of the patient, the button 4 is released, the plug pin 3 is separated from the slot, and the micro-screw fastening handle can be taken down.
Compared with the prior art, the movement of the bolt 3 is controlled by the button 4, so that the stroke of the bolt 3 is irrelevant to the action of plugging the micro screw into the groove, and the stroke of the bolt 3 can be accurately and quantitatively controlled according to the structural design of the transmission assembly, so that the bolt 3 can be deeply inserted into the slot, the fixing effect of the micro screw is improved, and the micro screw is prevented from falling off.
It should be noted that the neck 1 of the miniscrew fastening handle provided in this embodiment may be connected to a portion of the handle body 7 as shown in fig. 2 of the prior art, so as to obtain a better grip. Of course, the neck 1 and the handle body 7 may be integrally formed, so that the structure of the micro-screw fastening handle is simplified. However, it will be understood by those skilled in the art that, in the present embodiment, the key 4 disposed on the neck portion 1, various components disposed inside the neck portion, such as the spring 41 and the transmission assembly, etc., may be disposed on the handle body 7 or inside the handle body 7. The presence or absence of the handle 7 and the degree of engagement do not significantly affect the actual effect of the present invention, and therefore do not limit the scope of the present invention.
Second embodiment
The second embodiment of the invention provides a micro-screw fastening handle, which is different from the first embodiment in that two ends of a transmission rod 5 are respectively connected with a key 4 and a plug pin 3 on the same side with the key 4; in a second embodiment of the invention, and as shown in fig. 5, the two ends of the transmission rod 5 are connected to the push button 4 and the plug 3 on the opposite side of the push button 4, respectively.
Specifically, in the present embodiment, the transmission assembly includes:
the two ends of the transmission rod 5 are respectively connected with the key 4 and the bolt 3 at the opposite side of the key 4;
when the key cap 42 is pressed down, the spring 41 is compressed, the key cap 42 drives the bolt 3 to move along the radial direction of the head part 2 through the transmission rod 5, and the bolt 3 is separated from the slot arranged on the micro screw;
when the key cap 42 is released, the spring 41 is deformed again, and the key cap 42 drives the pin 3 to move along the radial direction of the head 2 through the transmission component, so that the pin 3 is inserted into the slot on the micro screw.
When the socket is used, the bolt 3 is separated from the slot when the key 4 is pressed. The head 2 of the micro screw is arranged in the groove, the key 4 is loosened, and the bolt 3 is inserted into the slot on the head of the micro screw, so that the micro screw is tightly locked by the fastening handle of the micro screw. The micro-screw fastening handle is rotated, after the micro-screw is fixed at a given position on the patient's teethridge, the key 4 is pressed and not placed, the plug pin 3 is separated from the slot, and the micro-screw fastening handle can be taken down.
When the transmission rod 5 is connected with the bolt 3 at the opposite side, the key cap 42 is pressed down to separate the bolt 3 from the slot arranged on the micro screw, so that the bolt 3 is in a state of being mutually inserted and combined with the slot arranged on the micro screw under the non-stressed condition, and a doctor does not need to continuously press the key 4 in the process of fastening the handle by using the micro screw, thereby saving more labor.
Third embodiment
The third embodiment of the invention provides a micro-screw fastening handle, which is a further improvement of the first and second embodiments, and the main improvement is that in the third embodiment of the invention, referring to fig. 6 or fig. 7, two keys 4, two transmission rods 5 and two pins 3 are provided, and the keys 4 and the pins 3 are connected through transmission components in a one-to-one correspondence manner.
Wherein, two buttons 4 are respectively positioned at two opposite sides of the neck 1, and two bolts 3 are respectively positioned at the two sides. When both sides all are provided with bolt 3 and all are controlled by button 4, can all possess sufficient stroke for the bolt 3 of both sides, improve fixed effect.
It is worth mentioning that in fig. 4 and 5 of the first and second embodiments of the present invention, a protruding structure is provided on the opposite side of the plug 3, and this protruding structure may be a conventional elastic plug structure in the prior art. Of course, any protruding structure may not be provided, and under the technical scheme of the present invention, the bolt 3 depending only on a single side has good fixing stability due to sufficient stroke. However, according to the embodiment, the bolts 3 are arranged on the two sides, so that the stress balance can be better ensured, and the use hand feeling of the micro-screw fastening handle is improved.
Example IV
The fourth embodiment of the present invention provides a micro-screw fastening handle, which is different from the first, second and third embodiments, mainly in that, in the first three embodiments of the present invention, the transmission assembly includes a transmission rod 5, and the transmission rod 5 is used to transmit the action of the key 4; in the fourth embodiment of the present invention, the transmission assembly realizes transmission through a gear structure.
Specifically, in the present embodiment, referring to fig. 8, there are two plugs 3, two plugs 3 are respectively located at two opposite sides of the neck 1, namely a left plug 3 and a right plug 3, and the plugs 3 are provided with teeth;
the transmission assembly includes:
a drive member;
the central gear 61 is in transmission connection with the keycap 42 through a driving piece;
the left transmission gear 62 is in transmission connection with the central gear 61 in the same direction;
the right transmission gear 63 is in reverse transmission connection with the central gear 61;
the left bolt 3 is meshed with the left transmission gear 62, and the right bolt 3 is meshed with the right transmission gear 63;
when the key cap 42 is pressed down, the spring 41 is compressed, and the driving member rotates the central gear 61; the central gear 61 drives the left transmission gear 62 and the right transmission gear 63 to rotate, and the bolt 3 moves along the radial direction of the head part 2;
when the key cap 42 is released, the spring 41 is deformed again, and the driving piece makes the central gear 61 rotate reversely; the central gear 61 rotates the left and right transmission gears 62 and 63, and moves the latch 3 in the radial direction of the head 2 in the direction opposite to the aforementioned direction.
In the present embodiment, the driving member is a rack 64, and one end of the rack 64 is connected to the key cap 42 of the key 4;
the central gear 61 is meshed with the teeth of the rack 64;
when the key cap 42 is pressed down, the spring 41 is compressed, and the key cap 42 drives the rack 64 to move along the length direction of the rack 64 and drives the central gear 61 to rotate;
when the key cap 42 is released, the spring 41 is deformed again, and the key cap 42 drives the rack 64 to move along the length direction of the rack 64 and drives the central gear 61 to rotate reversely.
The stroke of the key cap 42 of the key 4 can be directly converted into the formation of the bolt 3 by the rack 64 engaging with the central gear 61. Moreover, the stroke of the bolt 3 can be quantitatively controlled by adjusting the gear ratio.
In addition, by utilizing the gear structure, one key 4 can be used for controlling the pins 3 at two sides to move close to or away from each other, which is more convenient compared with the transmission rod 5.
In the present embodiment, the key 4 is on the same side as the left plug 3;
when the key cap 42 is pressed down, the left bolt 3 and the right bolt 3 move away from each other;
when the key cap 42 is released, the left-side bolt 3 and the right-side bolt 3 move close to each other.
When the key 4 is pressed, the bolts 3 on the two sides are far away from each other, and when the key 4 is released, the bolts 3 on the two sides are close to each other. This will enable the practitioner to rotate the miniscrew to tighten the handle without having to hold down the button 4, thus improving the ease of operation.
When the transmission rod 5 is used as a transmission component, the elongated shape of the transmission rod 5 may cause a certain amount of deformation due to the choice of materials. And the use of the gear structure has better stability and reliability than the use of the transmission rod 5.
Fifth embodiment
The fifth embodiment of the invention provides a micro-screw fastening handle, and the fifth embodiment is a further improvement of the fourth embodiment, and is mainly characterized in that in the fifth embodiment of the invention, as shown in fig. 9 and 10, a left transmission gear 62 and a right transmission gear 63 can be respectively in transmission connection with a central gear 61 through a belt, a chain or a gear set.
Specifically, referring to fig. 10, the transmission assembly further includes a left connecting pulley 65 and a right connecting pulley 66;
wherein, the left transmission gear 62 is connected with a left connecting belt wheel 65 through a belt, and the left connecting belt wheel 65 is connected with the central gear 61 through a belt;
the right transmission gear 63 is reversely connected to a right connecting pulley 66 through a belt, and the right connecting pulley 66 is connected to the sun gear 61 through a belt.
When the left connecting pulley 65 and the right connecting pulley 66 are provided, a more stable stroke can be provided by the belt, and the reverse movement of the left and right pins 3 can be more conveniently provided.
It should be noted that, in the present embodiment, as shown in fig. 9 and 10, the positions of the left connecting pulley 65 and the right connecting pulley 66 can be adjusted as needed, and by adjusting the positions of the left connecting pulley 65 and the right connecting pulley 66, the position and the direction of the belt can be freely set, which facilitates the design of the internal structure of the miniscrew fastening handle.
Sixth embodiment
A sixth embodiment of the present invention provides a miniscrew fastening handle, which is different from the fourth and fifth embodiments described above mainly in that in the fourth and fifth embodiments of the present invention, the driving member is a rack 64; in the sixth embodiment of the present invention, referring to fig. 11, the driving member is a motor 67, and the motor 67 is used for driving the central gear 61 to rotate; the button 4 is a switch of the motor 67.
The movement of the bolt 3 is controlled by the motor 67, which is labor-saving and has good reliability.
It will be appreciated by those of ordinary skill in the art that in the embodiments described above, numerous technical details are set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the claims of the present application can be basically implemented without these technical details and various changes and modifications based on the above-described embodiments. Accordingly, in actual practice, various changes in form and detail may be made to the above-described embodiments without departing from the spirit and scope of the invention.

Claims (10)

1. A miniscrew tightening handle for tightening a miniscrew comprising:
the neck (1), a key (4) is arranged on the neck (1), and the key (4) comprises a keycap (42) and a spring (41) for supporting the keycap (42);
the head (2) is provided with a groove for placing a micro screw; the inner wall of the groove is provided with a bolt (3);
the transmission assembly is arranged inside the neck (1) and is used for connecting the keycap (42) and the bolt (3);
when the key cap (42) is pressed down, the spring (41) is compressed, and the key cap (42) drives the bolt (3) to move along the radial direction of the head part (2) through the transmission component;
when the keycap (42) is released, the spring (41) restores to deform, and the keycap (42) drives the bolt (3) to move in the opposite direction along the radial direction of the head part (2) through the transmission component.
2. A miniscrew tightening handle according to claim 1, wherein: the transmission assembly includes:
the two ends of the transmission rod (5) are respectively connected with the key (4) and the bolt (3) at the same side with the key (4);
when the key cap (42) is pressed down, the spring (41) is compressed, the key cap (42) drives the plug pin (3) to move along the radial direction of the head part (2) through the transmission rod (5), and the plug pin (3) is mutually inserted into the slot arranged on the micro screw;
when the keycap (42) is released, the spring (41) restores to deform, and the keycap (42) drives the bolt (3) to move along the radial direction of the head part (2) through the transmission assembly, so that the bolt (3) is separated from the slot arranged on the micro screw.
3. A miniscrew tightening handle according to claim 1, wherein: the transmission assembly includes:
the two ends of the transmission rod (5) are respectively connected with the key (4) and the bolt (3) on the opposite side of the key (4);
when the key cap (42) is pressed down, the spring (41) is compressed, the key cap (42) drives the bolt (3) to move along the radial direction of the head part (2) through the transmission rod (5), and the bolt (3) is separated from the slot arranged on the micro-screw;
when the keycap (42) is released, the spring (41) restores to deform, and the keycap (42) drives the bolt (3) to move along the radial direction of the head part (2) through the transmission assembly, so that the bolt (3) and the slot arranged on the micro screw are mutually inserted and combined.
4. A miniscrew tightening handle according to claim 2 or 3, wherein: the number of the keys (4), the number of the transmission rods (5) and the number of the bolts (3) are respectively two, and the keys (4) and the bolts (3) are connected through the transmission components in a one-to-one correspondence manner;
the two keys (4) are respectively positioned on two opposite sides of the neck (1), and the two bolts (3) are also respectively positioned on the two sides.
5. A miniscrew tightening handle according to claim 1, wherein: the two bolts (3) are respectively positioned on two opposite sides of the neck (1) and respectively comprise a left bolt (3) and a right bolt (3), and teeth are arranged on the bolts (3);
the transmission assembly includes:
a drive member;
the central gear (61) is in transmission connection with the keycap (42) through the driving piece;
the left transmission gear (62) is in transmission connection with the central gear (61) in the same direction;
the right transmission gear (63) is in reverse transmission connection with the central gear (61);
the left side bolt (3) is meshed with the left transmission gear (62), and the right side bolt (3) is meshed with the right transmission gear (63);
when the key cap (42) is pressed down, the spring (41) is compressed, and the driving piece rotates the central gear (61); the central gear (61) drives the left transmission gear (62) and the right transmission gear (63) to rotate, and the bolt (3) moves along the radial direction of the head part (2);
when the keycap (42) is released, the spring (41) restores to deform, and the driving piece enables the central gear (61) to rotate reversely; the central gear (61) drives the left transmission gear (62) and the right transmission gear (63) to rotate, and the bolt (3) moves in the opposite direction along the radial direction of the head part (2).
6. A miniscrew tightening handle according to claim 5, wherein: the driving piece is a rack (64), and one end of the rack (64) is connected with a keycap (42) of the key (4);
the central gear (61) is meshed with the teeth of the rack (64);
when the key cap (42) is pressed down, the spring (41) is compressed, and the key cap (42) drives the rack (64) to move along the length direction of the rack (64) and drives the central gear (61) to rotate;
when the keycap (42) is released, the spring (41) restores to deform, and the keycap (42) drives the rack (64) to move along the length direction of the rack (64) and drives the central gear (61) to rotate reversely.
7. A miniscrew tightening handle according to claim 6, wherein: the key (4) is arranged at the same side of the left side bolt (3);
when the keycap (42) is pressed down, the left side bolt (3) and the right side bolt (3) move away from each other;
when the keycap (42) is released, the left side bolt (3) and the right side bolt (3) move close to each other.
8. A miniscrew tightening handle according to claim 6, wherein: the left transmission gear (62) and the right transmission gear (63) are in transmission connection with the central gear (61) through a belt, a chain or a gear set respectively.
9. A miniscrew tightening handle according to claim 8, wherein: the transmission assembly further comprises a left connecting belt wheel (65) and a right connecting belt wheel (66);
wherein the left transmission gear (62) is connected with the left connecting belt wheel (65) through a belt, and the left connecting belt wheel (65) is connected with the central gear (61) through a belt;
the right transmission gear (63) is reversely connected with the right connecting belt wheel (66) through a belt, and the right connecting belt wheel (66) is connected with the central gear (61) through a belt.
10. A miniscrew tightening handle according to claim 5, wherein: the driving piece is a motor (67), and the motor (67) is used for driving the central gear (61) to rotate;
the button (4) is a switch of the motor (67).
CN201710356580.1A 2017-05-19 2017-05-19 Micro-screw fastening handle Active CN107049535B (en)

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KR20090083007A (en) * 2008-01-29 2009-08-03 주식회사 제일메디칼코퍼레이션 Screw driver for medical treatments
KR100988305B1 (en) * 2008-11-11 2010-10-18 오스템임플란트 주식회사 Surgical driver for otrhodontic screw
US9205542B2 (en) * 2011-07-28 2015-12-08 Snap-On Incorporated Box wrench with split gear body and interchangeable drive insert
CN104369145B (en) * 2013-08-16 2016-08-24 苏州宝时得电动工具有限公司 Screw clamping device
CN203598059U (en) * 2013-09-17 2014-05-21 杭州西湖生物材料有限公司 Minitype regularly-polygonal prismoid clamping mechanism
CN203539459U (en) * 2013-10-18 2014-04-16 浙江普特医疗器械有限公司 Anchorage nail tool
CN204171946U (en) * 2014-11-02 2015-02-25 吴广琦 Screw fixed cover and screwdriver
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KR101684959B1 (en) * 2016-03-22 2016-12-23 이젠임플란트 주식회사 Driver holder for a tool of dental service and Driver device including the same
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CN207721908U (en) * 2017-05-19 2018-08-14 上海交通大学医学院附属第九人民医院 Micro screw fastening handle

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